Correlation Between Grain Yield and Its Components In Dwarf Wheat (Triticum aestivum L.)

Abstract

The simple, multiple, and partial correlation coefficients were estimated between grain yield and number of grains/m2, the harvest index, and other yield components of the dwarf wheat cultivar, Sidi Misri 1 (Triticum aestivum L.). The simple correlation coefficients were highly significant between grain yield, on one hand, and number of grains/m2 and harvest index on the other (r = 0.973 and 0.842, respectively). The multiple correlation coefficient was also highly significant between these variables (R = 0.977). Also, the partial correlation coefficients between grain yield and number of grains/m2, when the effects of harvest index and grain size were removed, were found to be highly significant with values of 0.925 and 0.999. respectively.
A strong and positive linear relationship was demonstrated between grain yield and number of grains/m2.